Gas Chromatography

GAS CHROMATOGRAPHY EXPERIMENT The purpose of this experiment is for the student: 1)to learn the general theoretical aspects of gas chromatography as a separation method, 2)to learn how to operate gas chromatographs specific to COD, 3)to become familiar with using the gas chromatograph (GC) to qualitatively identify components of mixtures, 4)to be introduced to and to interpret the quantitative data available via gas chromatography, 5)to gain insight into how the GC technique is used in the chemical industry both as a qualitative and quantitative tool.As a means of accomplishing these objectives, we will attempt to identify the three major organic components of two different kinds of nail polish remover. PRELAB ASSIGNMENT Read Technique 22 in Pavia, 4th ed. Be sure that you understand the components of a gas chromatograph and the factors affecting separation. Pay particular attention to the definitions of retention time and resolution and how the GC can be used for qualitative analysi s.  ·Fill out a gold sheet for all compounds present in the purple nail polish remover as listed below. Write a procedural flow chart for the experiment. EXPERIMENTAL PROCEDURE Each student will be required to make at least one injection into the GC. Each student will also be a member of a group and will share information and chromatograms with other group members and between groups. All GC injections will be one micro-liter â€Å"sandwiched injections†. The procedure for preparing the syringe is described below.  ·Place your sample in a small test-tube.  ·Rinse the syringe three times with your sample.  ·Draw approximately 1 micro-liter of air into the syringe. Draw 2 or 3 micro-liters of your sample into the syringe with the air.  ·Turn the syringe so that the tip of the needle is pointing up and expel liquid from the syringe until only 1 micro-liter of liquid remains in the syringe.  ·Pull the plunger back and draw in approximately 1 micro-liter of air. You now have a 1 micro-liter sample â€Å"sandwiched† between two air bubbles. Your group will be assigned either regular (purple) Revlon nail polish remover or acetone-free (blue) Revlon nail polish remover. The contents are listed below.Your group must gather enough information to be able to identify the three major peaks in the gas chromatogram for your assigned nail polish remover. Acetone, ethyl acetate, and isopropyl alcohol in addition to the two nail polish removers will be available as samples for injection. You may use these chemicals to make mixtures that you will inject into the GC. You may not inject any of these neat liquids (pure chemical samples) because the column may become overloaded and the peaks will show a lot of trailing.When analyzing the data and planning your mixtures, keep in mind that our GC's have flame ionization detectors that do not detect non-flammable substances such as water. Someone in the group will need to inject the assigned nail polish remover into a GC and wait for the instrument to record the chromatogram. While the GC is cooling down, label the chromatogram with your name, the name of your sample, and the number of the GC which was used. Have the instructor initial the original chromatogram.When the â€Å"ready† indicator light turns green on the GC, another member of the group should make an injection into the same GC in order to have the same experimental conditions for comparisons of results. The chemical make up of this second and subsequent injections should be determined after consultation within the group. You must get the approval of the instructor before making any mixtures for injection into the GC. Each person must submit at least one original initialed chromatogram attached to the cover sheet.All other chromatograms will be obtained from your partners and by exchanging data within a group. The second type of nail polish will be analyzed using class data that will be provided by your instructor. The labels on the two nail polish removers list the contents of each in the following order: PURPLE Nail Polish|BLUE Nail Polish| acetone|ethyl acetate| water|isopropyl alcohol| ethyl acetate|water| isopropyl alcohol|jojoba oil| benzophenone-1|butyl alcohol| dyes|butyl acetate| |toluene| |dyes|

Ramifications of Participation Contracts Essay

Providers must review participation contracts very carefully before signing and agreeing to one to avoid any consequences or negative effects for themselves. These participation contracts are put in place to allow the providers to have an overview of a plan to make decisions of participation. Providers can either gain financially or lose revenue when they participate in these contracts so it is best they go over them cautiously. Participation contracts can either be a gain or a fail for the provider. There have been cases where the provider loses revenue because the contract offers or pays less than the physicians set fees but can also increase patient numbers at the same time. With discounted fee-for-service, physicians are paid for every service and test provided based on a fee schedule or pre-determined discount from the usual fee charged by the physician. Physicians are only at risk if the cost of their care is greater than the payment the health plan will give them. This is typically why physicians will only test what is absolutely necessary. There are positive and negative ramifications of discounted fee-for-service arrangements. Positive ramifications of discounted fee-for-service arrangements are mainly geared towards the patient. When a patient is insured by a Preferred Provider Organization (PPO) and uses a physician within their network, their co-pays tend to be lower and they only pay an annual premium. Using an out-of-network provider would result in higher out-of-pocket costs for the patients. The most significant negative ramifications of discounted fee-for-service arrangements is that preventative care is not covered. This really affects the patient more so than the physician because any unnecessary tests or exams would be an out-of-pocket cost for the patient. There are benefits and disadvantages for not only the physician but also the patient when it comes to discounted fee-for-service and participation contracts. It is very  critical that the physician look closely at the participation contracts and choose what is best for their practice or facility. References: Valerius, J., Bayes, N., Newby, C., & Blochowiak, J. (2014). Medical insurance: An integrated claims process approach (6th ed.). Boston, MA: McGraw-Hill.

What Is a Pell Grant

What Is a Pell Grant SAT / ACT Prep Online Guides and Tips You might have heard about the federal Pell Grant and have some idea that it helps you pay for college. But you might not know the details, like how much you can get, whether you qualify, and how to apply. If you're looking for information financial aid, you should definitely learn about the Pell Grant. This annual award is given by the federal government to students who need help paying for college - if you meet all eligibility criteria, you're guaranteed to receive the money. Sounds like a great deal! In this guide,we'll cover the basic info about what a Pell Grant is, including: The history of the Pell Grant Award amounts What you can use Pell Grant money for Eligibility requirements Calculating your estimated award amount How to apply for a Pell Grant We'll explain each of these in more detail in separate guides that we'll link to, but this will give you a great overview of how Pell Grants work. History of the Pell Grant It wasn't always possible to get federal financial aid;there weren't many options for students who needed help paying for school outside of scholarships and private loans. This didn't present much of a problem for students who came from wealthier families, but the cost of higher education tended to prevent low- and middle-income students from attending college. During Lyndon B. Johnson's presidency, Congress passed the Higher Education Act of 1965, or the HEA. The HEA program provided federally-funded financial aid, in the form of grants and loans, to students who needed help paying for college or vocational school. Politicians reasoned that oneway to ensure better educational opportunities forcitizens was to mitigate financial burdens; why should motivated students be prevented from pursuing an education, if the only thing holding them back was cost? In 1972, Senator Claiborne Pell worked to expand and reform the HEA.Eligibility requirements for federal grants (formerly called Basic Educational Opportunity grants) were made more inclusive in 1978, and were renamed in honor of Senator Pell. Pell Grants have become an important financial aid foundation for many students across the US. The first year that grants were awarded, there were 176,000 recipients; for the 2013-2014 academic year, over 8.5 million students received almost 23 BILLIONdollars in Pell Grant money, with an average award amount of about $3,600! You could be one of those 8.5 million, and the Pell Grant amount will surely help you pay for college. Claiborne Pell, federal aid champion Pell Grant Award Amounts The amount of grant money students receive is based on a few different factors (which we'll touch on in a minute). For the 2015-2016 academic year, the maximum Pell Grant award is $5,775; the amount you'll receive if you're eligible will depend on financial need, and may be less than that. You can learn more about Pell Grant minimum/maximum awards here. What Does the Pell Grant Pay For? Because the Pell Grant is meant specifically to help students pay for school, it can only be used for school-related expenses (this does not come as a surprise, I'm sure). These expenses can include tuition, room, board, and school fees, but they can also include textbooks, supplies, transportation, and even food. Yes, the federal government could potentially fund late-night study fuel in the form of greasy pizza and/or energy drinks. Video games, not so much. You may not have to worry about managing your Pell Grant money, though. Oftentimes, it will go directly to your school, and will be applied to appropriate charges - most likely the big ones like tuition, room, and board expenses. You can get more information about Pell Grant limits here. As exciting as it may be to pay for your own textbooks, wouldn't it be great if you didn't have to? Eligibility Requirements Because the Pell Grant is a form of federal aid, you need to meet all federal requirements in order to be eligible to receive the grant. Basically, you need to have a high school diploma or GED, be a citizen or US national, and be enrolled (or accepted) in an eligible school. You can read more about the specifics of Pell eligibility requirements here. The Pell Grant is meant primarilyfor low-income students who don't already have a post-secondary degree (so, a bachelor's or vocational degree). Financial need is calculated by generating something called an Expected Family Contribution, or EFC; to receive the Pell for the 2015-2016 academic year, your EFC needs to be at or below $5081.Don't know what an EFC is? Don't worry - it's all explained in the next section. How to Calculate Your Estimated Award Amount It's possible to calculate how much Pell Grant money you're likely to receive before you even apply for federal aid. All you need is your family's financial information - you can get this from recent tax returns - in addition to information about your household size, family assets, and number of other family members in college. Go to this link, click onFAFSA4caster, and follow the prompts. The output will include Pell Grant estimates, in addition to other federal aid program estimates. Get more information about calculating your award by checking out our Pell Grant Calculator guide. Analyzing family finances can seem overwhelming, but I promise that calculating financial aid eligibility isn't this complicated. How to Apply for a Pell Grant There's no specific or dedicated application for the Pell Grant; you're automatically considered when you submit your Free Application for Federal Student Aid, or FAFSA.The FAFSA is totally free to submit (as you may have guessed). Even if you don't think you'll receive Pell Grant money, you have nothing to lose by submitting a FAFSA. You can submit a FAFSA online here, or you can get a paper application from your school's guidance office. The application shouldn't take more than a few hours, but preparing to fill out the application (for example, gathering all the necessary paperwork and setting a timeline) can be confusing without a game plan. Get step-by-step instructions for submitting your FAFSA here What's Next? There are other opportunities to get help paying for school outside of federal financial aid. Did you know that you can receive scholarships based on your SAT scores? Learn more about getting top test scores here. Merit-based scholarships can also close the gap between what you owe and what you need. Doing well in school can get you access to those scholarships. Want to improve your SAT score by 160 points or your ACT score by 4 points?We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Download it for free now:

A Citizens Right To be Equal (american History X) essays

A Citizen's Right To be Equal (american History X) essays America is known to many as a free country. It was founded on the belief that all citizens would have the opportunity to thrive. This notion has not always been true. In the early years of our country, racism was a large setback. Slavery ruined the idea of a free country, the idea that was supposed to be the most important of all. Over the years slavery was abolished and racism has been largely eliminated. There is, however, some racism still present in that only holds our country back. These racist people cannot be called citizens because of their actions. The definition of a citizen is A person owing loyalty to and entitled by birth or naturalization to the protection of a state or nation (American Heritage Dictionary). Part of being loyal and protecting the state is to obey the rules and ideals that the state has set. One of those ideals is to work with our peers toward something that would better society, no matter what race or religion they may be. We can see examples of this in the movie American History X. The movie begins with a gang of black guys trying to rob a car from one of the main characters, Derek. Derek, a racist, kills two of the three gang members, one of them very brutally by making him bite the curb and stomping on his head. He is sent to jail for three years for murder, and it would have been life if his brother had testified in the trial. As they explain later in the movie, Dereks racism started off because of his father. He told Derek not to listen to his black teacher saying, read the book, ace the guys test. Just dont swallow everything he feeds you whole just because you see it on the evening news. The father goes on to talk about affirmative black-tion and how the stuff his teacher tells him is nigger bullshit. Dereks racism only got worse when his dad, a fireman, was killed in a black neighborhood on the job in a black neighborhood...

Cathode Definition and Identification Tips

Cathode Definition and Identification Tips The cathode is the electrode from which electrical current departs. The other electrode is named the anode. Keep in mind, the conventional definition of current describes the direction a positive electric charge moves, while most of the time electrons are true current carries. This can be confusing, so the mnenomic CCD for cathode current departs may help reinforce the definition. Usually, current departs in the direction opposite electron movement. The word cathode was coined in 1834 by William Whewell. It comes from the Greek word kathodos, which means way down or descent and refers to the setting sun. Michael Faraday had consulted Whewell for name ideas for a paper he was writing on electrolysis. Faraday explains electric current in an electrolytic cell moves through the electrolyte from East to West, or, which will strengthen to help the memory, that in which the sun appears to move. In an electrolytic cell, the current leaves the electrolyte on the west side (moving outward). Prior to this, Faraday had proposed the term exode, discarding dysiode, westode, and occiode. In Faradays time, the electron had not been discovered. In the modern era, one way to associate the name with current is to think of a cathode as the way down for electrons into a cell. Is the Cathode Positive or Negative? The polarity of the cathode with respect to the anode may be positive or negative. In an electrochemical cell, the  cathode is the electrode at which reduction occurs. Cations are attracted to the cathode. Generally, the cathode is the negative electrode in an electrolytic cell undergoing electrolysis or in a recharging battery. In a discharging battery or a galvanic cell, the cathode is the positive terminal. In this situation, positive ions move from the electrolyte toward the positive cathode, while electrons move inward toward the cathode. The movement of electrons towards the cathode (which carry a negative charge) means current departs from the cathode (positive charge). So, for the Daniell galvanic cell, the copper electrode is the cathode and the positive terminal. If current is reversed in a Daniell cell, an electrolytic cell is produced, and the copper electrode remains the positive terminal, yet becomes the anode. In a vacuum tube or cathode ray tube, the cathode is the negative terminal. This is where electrons enter the device and continue into the tube. A positive current flows out from the device. In a diode, the cathode is indicated by the pointed end of an arrow symbol. It is the negative terminal from which current flows. Even though current may flow in both directions through a diode, naming is always based on the direction in which current flows most easily. Mnemonics  to Remember the Cathode in Chemistry In addition to the CCD mnemonic, there are other mnemonics to help identify the cathode in chemistry: AnOx Red Cat stands for oxidation at the anode and reduction at the cathode.The words cathode and reduction both contain the letter c. Reduction occurs at the cathode.It may help to associate the cat in cation as acceptor and an in anion as donor. Related Terms In electrochemistry, the cathodic current describes the flow of electron from the cathode into solution. The anodic current is the flow of electrons from solution into the anode.

Influence of Ethics on Decision Making & Impact of Technology on Essay

Influence of Ethics on Decision Making & Impact of Technology on Work-Related Stress - Essay Example Technology is another factor that affects the workplace and forces managers to make decision regarding the integration of new technological business solution. This paper analyzes the effects of ethics in decision making and the impact of technology on work related stress. The actions and decisions that companies make can have a lasting impact in the reputation of an enterprise. The rising cost of doing business place managers in situations in which they have to make tough decisions about different business actions. Environmental regulation is one of these areas in which companies at times try to cheat the system. The environmental regulations oversees are much lower than in the United States. Companies know that certain industrial processes hurt the environment, but if the country allows them a firm may be persuaded to lower their standard to reduce cost despite knowing that this is morally wrong Twenty four years a ago there a tragic case of an immoral decision concerning safety protocols in Bhopal India that lead to a gas leak explosion. The accident at the Union Carbide pesticide plant caused the death of over 8,000 people and injured over 50,000 due to corporate negligence and irrefutable immoral behavior (Primeseeeds, 1999). The utilitarian view of ethics considers ethical behavior to be that which delivers the greatest good to the greatest number of people (Shermerhorn, et al.). Let’s consider the case of immigrant works in the agricultural field. Currently the United States laws forbid the employment of illegal immigrant workers. There is a shortage of supply of labor to work in the agricultural field and a need for the food production for the community. The illegal coming into America have the necessity to obtain they are willing to work hard for low wages. Based the facts many farming companies are willing hire illegal immigrants despite the risk of facing large fines if the government finds out. To the

Assignment taxation law Example | Topics and Well Written Essays - 500 words

Taxation law - Assignment Example Applying taxation law in the case of Concrete and Transport Ltd, analysis of the implications of the company decision on its activities is necessary. In deciding on whether to carry out repairs, the company needs to consider taxation on the materials required for carrying out the work. In the second option of building new production plant, more capital is necessary to cater for direct taxation, that is, to cater for new premises, and taxation on the materials needed in the construction (Jonathan & Bowen, 2008). Taxation law differs with operations in business. According to Erdős (2011), for a company to venture into railway transport services, it must be a corporation. For corporations, there is double taxation on all the profits including money for company expenses such as expansion. The management of corporations is a different lawful body and not the owners. Therefore, expanding the railway line means increased taxation to the company. In mechanization, taxation law differs with countries. In developed countries, for example, there is no over taxation. In developing countries, there is over taxation of the equipment used to encourage the creation of more job opportunities (Jonathan & Bowen, 2008). According to Schanz (2011), taxes have a significant factor in decision-making. This is because investment decisions are prone to distortion by taxation. In any business, the owners of the business they do undergo taxation or sail through without taxation. Therefore, it is necessary for the Concrete and Transport management to do analysis of their proposed company expansion to determine the after tax returns on the capital expected in the new idea. Expanded business does not guarantee increased returns due to taxes levied. As the business grows, there is a high chance of increased taxes, and in some cases, double taxation occurs, for example, in corporations (Schanz, 2011). Tax research is